Festo CPX-E Series, Description

Page: 12 / 28

2 Function
12 Festo – CPX-E-PB-EN – 2017-07 – English
2.5 Diagnosis via PROFIBUS DP
System CPX-E supports the following diagnostics options via PROFIBUS DP in the following stages according to
IEC 61158:
–
Station status (standard diagnostic information)
– Devide-related diagnostics (general, device-related status signals of the system)
– Identifier-related diagnostics (diagnostics assigned to the modules)
– Channel-related diagnostics (diagnostics assigned to the channels)
–
Module number
– Channel number and input/output
– Type of diagnostics (error type and channel type)
2.5.1 Diagnostic steps
The necessary steps for performing diagnostics on the system CPX-E are explained below.
Step 1: Evaluation of the standard diagnostic information – station status 1 (diagnostic byte 1)
0
1
1
0
2 3
1
1 4
0
5
0
6
0
7
0 1
Bit
Station status 1
Evaluation of Bit 0 and Bit 2:
–
No operating voltage present on system CPX-E,
network plug not inserted, etc.
– Configuration data obtained from the master does not
agree with the configuration data from the CPX-E system.
Evaluation of Bit 3:
–
Diagnostic message present
è
Step 2
Step 2: Evaluation of the diagnostic bytes
Byte 7 … 22: Device-specific diagnostics
è
Tab. 2.9
Byte 23 … 29: Identifier-related diagnostics
è
Tab. 2.10 and 2.5.4 Identifier-related diagnosis
Byte 30 … 62: Channel-related diagnostics
è
Tab. 2.11 and 2.5.5 Channel-related diagnosis
Fig. 2.4
The diagnostic information is sent to the master system only when the diagnostic mode is activated.
In some cases, the diagnostics mode must be shut down to commission the system.
2.5.2 Overview of diagnostic bytes
Standard diagnostic information (6 bytes)
Byte
Table of contents Explanation
1 Station status 1
è
Tab. 2.12
2 Station status 2
è
Tab. 2.13
3 Station status 3
è
Tab. 2.14
4 Diag.Master_add Address of the master parameterised by system CPX-E.
5 Ident_number – High Byte Manufacturer identifier – High Byte (0F
h
)
6 Ident_number – Low Byte Manufacturer identifier – Low Byte (A3
h
)
Tab. 2.8